Every year, more than 100,000 testers take the Law School Admission Test (LSAT). One year, the scores had a mean and standard deviation of approximately 151 and 9 points, respectively. Suppose that in the
scoring process, test officials audit random samples of 36 tests, which involves calculating the sample mean
score for each sample.
Calculate the mean and standard deviation of the sampling distribution of I.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)